/**
 * Copyright (c) 2015, 漆夜
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 *
 * * Redistributions of source code must retain the above copyright notice, this
 *   list of conditions and the following disclaimer.
 *
 * * Redistributions in binary form must reproduce the above copyright notice, this
 *   list of conditions and the following disclaimer in the documentation and/or
 *   other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include "redis_wrapper.h"

bool redis::connection::auth(redisContext *redis_handle, const char *passwd, std::string *err_str)
{
    if (NULL == redis_handle || NULL == passwd) {
        return false;
    }

    redis::wrapper::RedisReply reply((redisReply*)redisCommand(redis_handle, "auth %s", passwd));

    if (!redis::ok(redis_handle)) {
        return false;
    }

    if (!reply.is_vaild()) {
        return false;
    }

    if (reply.c_data()->type == REDIS_REPLY_ERROR) {
        return false;
    }

    if (reply.c_data()->integer == REDIS_REPLY_STATUS) {
        if (strcasecmp(reply.c_data()->str, "OK") == 0) {
            return true;
        } else {
            if (NULL != err_str) {
                *err_str = reply.c_data()->str;
            }
            return false;
        }
    }

    return false;
}

std::string redis::connection::ping(redisContext *redis_handle, const char *ping_str)
{
    if (NULL == redis_handle) {
        return "Could not connect to Redis at 127.0.0.1:6379: Connection refused";
    }

    std::string cmd("ping");

    if (NULL != ping_str) {
        cmd.append(" ");
        cmd.append(ping_str);
    }


    redis::wrapper::RedisReply reply((redisReply*)redisCommand(redis_handle, cmd.c_str()));

    if (!redis::ok(redis_handle)) {
        return redis_handle->errstr;
    }

    if (!reply.is_vaild()) {
        return redis_handle->errstr;
    }

    if (reply.c_data()->type == REDIS_REPLY_STRING) {
        return reply.c_data()->str;
    }

    return "Could not connect to Redis at 127.0.0.1:6379: Connection refused";
}

std::string redis::connection::echo(redisContext *redis_handle, const char *echo_str)
{
    if (NULL == redis_handle) {
        return "-1";
    }

    redis::wrapper::RedisReply reply((redisReply*)redisCommand(redis_handle, "echo %s", echo_str));

    if (!redis::ok(redis_handle)) {
        std::cout << redis::error_str(redis_handle) << std::endl;
        return "-1";
    }

    if (!reply.is_vaild()) {
        return "-1";
    }

    if (reply.c_data()->type == REDIS_REPLY_STRING) {
        return reply.c_data()->str;
    }

    return "-1";
}

bool redis::connection::select(redisContext *redis_handle, uint32_t ii)
{
    if (NULL == redis_handle) {
        return false;
    }

    redis::wrapper::RedisReply reply((redisReply*)redisCommand(redis_handle, "select %d", ii));

    if (!redis::ok(redis_handle)) {
        std::cout << redis::error_str(redis_handle) << std::endl;
        return false;
    }

    if (!reply.is_vaild()) {
        return false;
    }

    return reply.c_data()->type != REDIS_REPLY_ERROR;

}

void redis::connection::quit(redisContext *redis_handle)
{
    if (NULL == redis_handle) {
        return ;
    }

    redis::wrapper::RedisReply reply((redisReply*)redisCommand(redis_handle, "quit"));

    if (!redis::ok(redis_handle)) {
        std::cout << redis::error_str(redis_handle) << std::endl;
        return ;
    }

    if (!reply.is_vaild()) {
        return ;
    }

    if (reply.c_data()->type == REDIS_REPLY_STATUS) {
        return ;
    }

    return ;
}
